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AD8228:  Low Gain Drift Precision Instrumentation Amplifier Fixed G = 10, 100

Product Details

Product Status:Recommended for New Designs

The AD8228 is a high performance instrumentation amplifier with very high gain accuracy. Because all gain setting resistors are internal and laser trimmed, gain accuracy and gain drift are better than can be achieved with typical instrumentation amplifiers.

Low voltage offset, low offset drift, low gain drift, high gain accuracy, and high CMRR make this part an excellent choice in applications that demand the best dc performance possible, such as bridge signal conditioning.

The AD8228 operates on both single and dual supplies. Because the part can operate on supplies up to ±18 V, it is well suited for applications where high common-mode input voltages are encountered. The AD8228 is available in 8-lead MSOP and SOIC packages.

Performance is specified over the entire industrial temperature range of −40°C to +85°C for all grades. Furthermore, the AD8228 is operational from −40°C to +125°C. For a pin-compatible amplifier with similar specifications, but with a gain range of 1 to 1000, see the AD8221.

Applications

  • Weigh scales
  • Industrial process controls
  • Bridge amplifiers
  • Precision data acquisition systems
  • Medical instrumentation
  • Strain gages
  • Transducer interfaces
  • Data Sheet, Rev 0, 08/2008

    FEATURES and BENEFITS

    • Easy to use
    • Pin strappable gains of 10 and 100
    • Wide power supply range: ±2.3 V to ±18 V
    • DC specifications (B Grade, G = 10)
      2 ppm/°C gain drift
      0.02% gain error
      50 μV maximum input offset voltage
      0.8 μV/°C maximum input offset drift
      0.6 nA maximum input bias current
      100 dB CMRR
    • AC specifications
      650 kHz, –3 dB bandwidth (G = 10)
      2 V/μs slew rate
    • Low noise
      8 nV/√Hz, @ 1 kHz (G = 100)
      0.3 μV p-p from 0.1 Hz to 10 Hz (G = 100)

    Documentation

    Title Content Type File Type
    AD8228: Low Gain Drift Precision Instrumentation Amplifier Data Sheet (Rev 0, 08/2008) (pdf, 338 kB) Data Sheets PDF
    A Designer's Guide to Instrumentation Amplifiers (3rd Edition) Design Handbooks HTML
    UG-261: Evaluation Boards for the AD62x, AD822x and AD842x Series  (pdf, 604 kB) User Guides PDF
    High-performance Adder Uses Instrumentation Amplifiers
    Make an adder circuit using instrumentation amplifiers to increase input impedance.
    (EDN, 9/3/2009)
    Technical Articles HTML
    RAQs index Rarely Asked Questions HTML
    Glossary of EE Terms Glossary HTML

    Design Tools,Models,Drivers & Software

    Title Content Type File Type
    AD8228 SPICE Macro-Model SPICE Models HTML

    Evaluation Kits & Symbols & Footprints

    Evaluation Boards & KitsView the Evaluation Boards and Kits page for documentation and purchasing

    Symbols and Footprints— Analog Devices offers Symbols & Footprints which are compatible with a large set of today’s CAD systems for broader and easier support.

    SampleSample & Buy

    Price, packaging, availability

    AD8228 Model Options
    Model Package Pins Temp.
    Range
    Packing,
    Qty
    Price*(100-499) Price*1000 pcs RoHS View PCN/ PDN Check Inventory/
    Purchase/Sample
    AD8228ARMZ Status: Production 8 ld MSOP 8 Ind Tube, 50 $3.60 $3.03 Y  Material Info PCN Purchase Sample
    AD8228ARMZ-R7 Status: Production 8 ld MSOP 8 Ind Reel, 1000 - $3.03 Y  Material Info PCN Purchase
    AD8228ARMZ-RL Status: Production 8 ld MSOP 8 Ind Reel, 3000 - $3.03 Y  Material Info PCN Purchase
    AD8228ARZ Status: Production 8 ld SOIC 8 Ind Tube, 98 $3.60 $3.03 Y  Material Info Notify Me Purchase
    AD8228ARZ-R7 Status: Production 8 ld SOIC 8 Ind Reel, 1000 - $3.03 Y  Material Info Notify Me Purchase
    AD8228ARZ-RL Status: Production 8 ld SOIC 8 Ind Reel, 2500 - $3.03 Y  Material Info Notify Me Purchase
    AD8228BRMZ Status: Production 8 ld MSOP 8 Ind Tube, 50 $5.40 $4.54 Y  Material Info PCN Purchase
    AD8228BRMZ-R7 Status: Production 8 ld MSOP 8 Ind Reel, 1000 - $4.54 Y  Material Info PCN Purchase
    AD8228BRMZ-RL Status: Production 8 ld MSOP 8 Ind Reel, 3000 - $4.54 Y  Material Info PCN Purchase
    AD8228BRZ Status: Production 8 ld SOIC 8 Ind Tube, 98 $5.40 $4.54 Y  Material Info Notify Me Purchase
    AD8228BRZ-R7 Status: Production 8 ld SOIC 8 Ind Reel, 1000 - $4.54 Y  Material Info Notify Me Purchase
    AD8228BRZ-RL Status: Production 8 ld SOIC 8 Ind Reel, 2500 - $4.54 Y  Material Info Notify Me Purchase
    Price Table Help

    The USA list pricing shown is for BUDGETARY USE ONLY, shown in United States dollars (FOB USA per unit for the stated volume), and is subject to change. International prices may differ due to local duties, taxes, fees and exchange rates. For volume-specific price or delivery quotes, please contact your local Analog Devices, Inc. sales office or authorized distributor. Pricing displayed for Evaluation Boards and Kits is based on 1-piece pricing.

    AD62x, AD822x, AD842x Series InAmp Evaluation Board
    Model Description Price RoHS View PCN/ PDN Check Inventory/
    Purchase/Sample
    EVAL-INAMP-62RZ Status: Production AD620/621/AD622/623/627/AD8223 SOIC Eval Board $40.23 Yes -
    EVAL-INAMP-ICF-RMZ Status: Production AD8420/AD8237 MSOP Eval Board $34.58 Yes -
    EVAL-INAMP-82RMZ Status: Production AD8220/8221/8226/8227/8228/8236/8421/8422 MSOP Eval Board $34.49 Yes -
    EVAL-INAMP-82RZ Status: Production AD8221/8226/8227/8228/8229/8421/8422/8428/8429 SOIC Eval Board $34.49 Yes -

    Pricing displayed is based on 1-piece. The USA list pricing shown is for budgetary use only, shown in United States dollars (FOB USA per unit), and is subject to change. International prices may vary due to local duties, taxes, fees and exchange rates.

    Check Inventory & Purchase

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